Titre

Paper characteristics and their influence on the ability of single metal deposition to detect fingermarks

Type
article
Institution
UNIL/CHUV/Unisanté + institutions partenaires
Périodique
Auteur(s)
Acherar, Ouahiba
Auteure/Auteur
Truong, Minh Quang
Auteure/Auteur
Robert, Sylvain
Auteure/Auteur
Crispino, Frank
Auteure/Auteur
Moret, Sébastien
Auteure/Auteur
Bécue, Andy
Auteure/Auteur
Liens vers les personnes
Liens vers les unités
ISSN
2468-1709
Statut éditorial
Publié
Date de publication
2019-03
Volume
12
Première page
8
Dernière page/numéro d’article
24
Peer-reviewed
Oui
Langue
anglais
Résumé
This study aims at exploring the way paper samples may impact the performance of Single-Metal Deposition (SMD II), a fingermark detection technique known for its versatility of application as well as its sensitivity regarding porous substrates. To get a broader view on how porous substrates may impact the SMD II performances, 74 North American and European papers types were collected, characterized (UV-visible and infrared spectroscopy, roughness, porosity, and surface pH), and processed as substrates bearing fingermarks. This part of the study represented a first valuable outcome by the number of samples considered. After processing with SMD II, the samples were characterized again with the techniques mentioned above, background staining and fingermark quality were assessed and associated with a quality score. Overall, no positive nor negative trend was observed between the paper characteristics and the SMD II performance. As a consequence, it is currently still not possible to predict if a paper sample will behave well or bad with SMD II. Of all the monitored parameters, the chemical composition of the surface coating (i.e., silica or calcium carbonate) may be worth exploring further, as it has been observed that some coatings undergo partial degradation during the SMD II process. As a result, secretion residue may be damaged by the chemical solubilization of the support layer if they failed to penetrate deeper into the substrate.
Sujets

Forensic science

Chemical analysis

Porous substrate

Surface properties

Gold nanoparticles

PID Serval
serval:BIB_33E8F64ABE8C
DOI
WOS
Permalien
Date de création
2019-02-22T13:33:04.705Z
Date de création dans IRIS
2025-05-20T18:18:47Z
Fichier(s)
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Nom

20181113 - Manuscript final (SERVAL).pdf

Version du manuscrit

postprint

Taille

1.74 MB

Format

Adobe PDF

PID Serval

serval:BIB_33E8F64ABE8C.P001

URN

urn:nbn:ch:serval-BIB_33E8F64ABE8C6

Somme de contrôle

(MD5):64c9233fc599769cc5dc4ce28c5336b5

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Nom

20181113 - Appendix (SERVAL).pdf

Version du manuscrit

preprint

Taille

203.57 KB

Format

Adobe PDF

PID Serval

serval:BIB_33E8F64ABE8C.S002

Somme de contrôle

(MD5):4de27585dc9c98198e0f676a0c8b5e25